asterisk users - Dec 2004 - SIP URI Dialplan?

I've got soft phone that allows me to dial SIP URI's. I'd like to
route these calls through a provider to be completed, because I'm
beind a NAT box and doing it directly doesn't work.

Right now I've got an extension defined like this:
Dial(IAX2/${FWDUSERID}:${FWDPASSWD}@${FWDSERVER}/**356<username>)
This will connect a call to FWD and call a user at FWD. It works nicely.

What I'd like to do is write a dialplan that recognizes:
<username>@sip.earthlink.net
and does a dial like the one above.

As far as I can tell the dial plans only allow me to specify digits.
As SIP phones become more prevelant, it would be great to have
dialplans that recognized SIP URIs.

- |Daryll

On 22-Dec-2004, Daryll Strauss wrote:
> What I'd like to do is write a dialplan that recognizes:
> <username>@sip.earthlink.net
> and does a dial like the one above.
This is possible, but it's a bit convoluted what needs to be done.  
Fundamental to asterisk design seems to be the notion that ${SIPDOMAIN}
is always going to be local which makes routing calls a bit tricky.

I documented my approach at:
  http://slacker.com/~nugget/asterisk7.php

-- 
David McNett <nugget@slacker.com>
http://slacker.com/~nugget/